DLR/TerraSAR-X: development of IPY portofolio since the SAR coordination workshop (CSA, March 2008) Dana Floricioiu

Transcription

1 DLR/TerraSAR-X: development of IPY portofolio since the SAR coordination workshop (CSA, March 2008) Dana Floricioiu STG-3 Meeting, ESRIN Frascati 5/6 May 2008

2 Acquisitions themes adopted at the SAR coordination workshop 5/6 March 08 where TerraSAR-X can contribute: 1. Antarctica: pole to coast InSAR coverage in high resolution mode (4 consecutive cycles in asc and desc) in winter; pole hole mapping 2. Greenland and major Canadian icefields: InSAR acquisitions in high resolution mode (3,4 consecutive cycles in asc and desc) in winter 3. Multi- and full-polarimetric data acquisitions over common supersites Folie 2

3 Theme 1. Antarctica: pole to coast InSAR coverage in high resolution mode Suggested TSX acquisition mode: Stripmap (SM) Θ 1 =20 o >30 km Θ 2 =45 o swath width (range): 30 km single pol. (15 km dual pol.) full performance incidence angle range: deg (access range deg) azimuth resolution: 3.3 m single pol. (6.6 m dual pol.) ground range resolution 150 MHz chirp BW: 1.7 m m (45 20 deg) nom. product length: 8 sec. (50 km). For IPY up to 60 sec. possible (350 km) polarizations: single HH or VV, dual (HH/VV), (HH/HV) or (VV/VH) Folie 3

4 TerraSAR-X maximum coverage towards the South pole sub satellite track 82.6 S Stripmap mode: Nominal mode: right looking and full performance beam (inc. angle 20 deg, strip_003) up to 81 S possible Left looking and full performance beam (inc. angle about 45 deg, strip_014) up to 87.1 S possible Left looking and max. access range (inc. angle 60 deg, strip_027) up to 89.7 S

5 Left looking EOWEB Request simulation (1): 1 day ( ), one beam/orbit (no conflicts) 60 inc. angle (max.possible); Region of interest: South of 89.0 S Result: 15 scenes, scene length 30 (190 km) S 89.7 S Folie 5

6 Left looking EOWEB Request simulation (2): 1 day ( ), one beam/orbit (no conflicts) 44 inc. angle (nominal product) Region of interest : South of 86.0 S 86 S 87.1 S Result: 15 scenes, scene length 1 15 (470 km). Lat 86.0S 30 km x 470 km Folie 6

7 Left looking EOWEB Request simulation (3): 1 day ( ), one beam/orbit (no conflicts), 44 inc. angle Region of interest : South of 85.0 S Result: 15 scenes, length 2 min S 87.1S Folie 7

8 TerraSAR-X left looking (LL) mode: Successfully tested for single scenes but not for large areas: impact on mission operations (solar antenna, SAR antenna orientations) products have degraded performance Scientific community: should give a detailed planning of the acquisitions (areas, incidence angle, polarization, priorities, period of the acq.). 4 successive cycles (11 day repeat pass) or with longer interval? DLR: looks which Antarctic regions desired by the IPY - community can be acquired in one 11-days cycle consultancy of EADS - Astrium (constructor) for larger acquisitions in LL mode checks other restrictions for the proposed dates (orbit usage, maintenance phases, eclipse) Folie 8

9 Theme 3. Multi-frequency (C-, L-, X) and fully polarimetric data acquisitions over common supersites Dual receive antenna (DRA) configuration experimental mode of TerraSAR-X: DRA tests are planned for summer 2008, for fully polarimetric and along track interferometry imaging. Test sites for fully polarimetric acquisitions can be proposed (through D. Floricioiu). IPY - supersites selected by the scientific community are welcome (applications: sea ice, permafrost, glacier facies, SWE). Deadline 10 June Quad pol TerraSAR-X acquisitions: in August 2008 Folie 9

10 Recent TSX acquisitions for the IPY project on state and fate of the Canadian cryosphere: region Inuvik; mode stripmap, dual pol VV/VH, 6 test sites Husky Lake 68.8N 133.1W; 6 April deg inc. angle VH,VV,VH-VV N Range dir. Folie 10

11 Inuvik Campaign Site: Delta 69.4N 135.2W; 25 April deg inc. angle VH,VV,VH-VV DT 5073 Folie 11

12 Access to TerraSAR-X data for scientific use in IPY Pre-launch accepted proposals (status ): COA0195 Ronald Saper (Vantage Point International) active HYD0270 Alexander Braun (University of Calgary) active LAN0066 Kenneth Jezek (Ohio State University) not active LAN0013 Mathias Braun (University of Bonn) active MTH0123 Wolfgang Dierking (AWI) active MTH0176 Kjell Arild Hogda (Norut IT) active OCE0116 Detlev Stammer (University of Hamburg) active Folie 12

13 New IPY related science proposals for TerraSAR-X submitted since March 2008 Ice velocity: HYD0377 Ian Joughin (Univ of Washington) - accepted Greenland glaciers and Antarctica, if LL possible: Whillans and Kamb ice streams Should we gather/acquire all LL sites for IPY in the common DLR - IPY proposal? HYD0396 Dana Floricioiu (DLR) Antarctic peninsula outlet glaciers around Larsen A and B Folie 13

14 Stripmap, single polarization Drygalski glacier, Antarctic peninsula, Polarisation: HH Incidence Angle: 37 deg (beam:strip_010 R) N Flight dir (Asc) Range dir. ~30 km Folie 14

15 TerraSAR-X stripmap mode Envisat ASAR image mode (30 m res.) Folie 15